| Base | Representation |
|---|---|
| bin | 1001011111000110000100… |
| … | …01011101010011000011000 |
| 3 | 2201212011022201022120221100 |
| 4 | 10233203002023222120120 |
| 5 | 10213230444432321311 |
| 6 | 112210435433111400 |
| 7 | 4252025543132400 |
| oct | 457430213523030 |
| 9 | 81764281276840 |
| 10 | 20859619026456 |
| 11 | 6712573149821 |
| 12 | 240a898258560 |
| 13 | b84090aab252 |
| 14 | 52187a625800 |
| 15 | 262917224a56 |
| hex | 12f8c22ea618 |
20859619026456 has 288 divisors, whose sum is σ = 68590807983360. Its totient is φ = 5699515054464.
The previous prime is 20859619026443. The next prime is 20859619026469. The reversal of 20859619026456 is 65462091695802.
It is a happy number.
20859619026456 is a `hidden beast` number, since 2 + 0 + 8 + 5 + 9 + 619 + 0 + 2 + 6 + 4 + 5 + 6 = 666.
It is an interprime number because it is at equal distance from previous prime (20859619026443) and next prime (20859619026469).
It is a super-2 number, since 2×208596190264562 (a number of 27 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (63).
It is a junction number, because it is equal to n+sod(n) for n = 20859619026393 and 20859619026402.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 405937741 + ... + 405989123.
It is an arithmetic number, because the mean of its divisors is an integer number (238162527720).
Almost surely, 220859619026456 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 20859619026456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34295403991680).
20859619026456 is an abundant number, since it is smaller than the sum of its proper divisors (47731188956904).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20859619026456 is a wasteful number, since it uses less digits than its factorization.
20859619026456 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 56435 (or 56421 counting only the distinct ones).
The product of its (nonzero) digits is 55987200, while the sum is 63.
The spelling of 20859619026456 in words is "twenty trillion, eight hundred fifty-nine billion, six hundred nineteen million, twenty-six thousand, four hundred fifty-six".
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